The controversial bout between David Haye and Dereck Chisora will definitely go ahead, according to organisers, after the Luxembourg Boxing Federation reiterated its support for the fight despite a threat of expulsion from the European Boxing Union.

Haye's heavyweight grudge match against Chisora at Upton Park in July has had to be sanctioned by the LBF as both fighters do not hold a British licence.

The EBU general assembly passed a motion that decreed the LBF would be thrown out of the European organisation if they continued to back the fight, but despite this threat the LBF voted in favour of backing the bout by eight votes to four at a special general meeting.

A statement released by Frank Warren Promotions read: "Therefore the LBF is backing the show along with the World Boxing Organisation (WBO) and the World Boxing Association (WBA), whose International and Intercontinental titles will be contested, and the promotion will definitely go ahead."

Events on Wednesday night events are the latest instalment in what has been a controversial buildup to the fight between the two Londoners, who caused outrage in February when they brawled at a press conference that followed Chisora's defeat to Vitali Klitschko.

The British Boxing Board of Control threatened to expel all those involved in the 14 July fight without a hearing, although it later softened its stance by claiming anyone charged would be able to answer their case.

Warren, who manages Chisora, has said he intends to issue legal proceedings against the BBBC.

The WBA, IBF and WBO heavyweight champion Wladimir Klitschko branded the bout a "freak show", but Warren insists the fight is legal and is adamant that Chisora should be allowed to take on Haye as he has not been able to box since February.

Haye has not fought since an embarrassing defeat to the younger Klitschko brother last summer – a loss he partly blamed on a broken little toe.

Chisora goaded his 31-year-old opponent last Sunday when he wore a T-shirt that had the words "Ain't toe stopping us now" emblazoned across the middle of it during a public workout in London.